Fluid motor



. I. GASSER.

FLUID MOTOR.

APPHCATIUN FILED- OCT. H1 1920.

Patented Apr. 11, 1922.

l J 17 f lan ob ATTORNEY I UNITED STATES PATENT OFFICE.

JOSEPH eAs'snn, or rnniv roiv, NEW JERSEY.

FLUID Moron.

Specifioatioxi of Letters Fatcnt.

Patented Apr. 11, 1922.

Application filed Octoberll, 1920. Serial No. 415,956.

ToyaZZ whom it may concern: I

Be it known that l, ,Jcsnmr GA-S81E12, a citizen of the Unitedv States, residing" at Trenton, in the cour v of Illercer and State of New Jersey, have invented new and useful Improvements in Fluid Motors, of which the following'is a specification-l This invention'relates. to rotary brushes ofthe type used in scrubbing metallic surfaces such as iron, steel and the like for the purpose of removing rnst, dirt and the l' "in crustations"thereirom, and has for its object the provision of a novel fluid motor :for the purpose of driving a rotary brush 'member. v

in important object is the provision of a fiuid motor of this characterivhich is provided with a simply operated control valve whereby the passage of the motive fiuidmay be controlled for the purpose of varying the speed of rotationiof the rotor.

An additional object is the provision a device of this character ivhichwvill be sicple and inexpensive in manufacture h hly eilicient in use, positive in action and on oral improvement in the art.

With the foregoing and other objects in view as will be hereinafter more apparent, my invention consists essentially in he novel features of construction, combir n and arrangemen of parts hereinaitr lull described and more specifically defined by the appended claim.

In the further disclosure of the invention, reference is to be had to the accompanying sheet of eXpl-anatoi T drawings constituting a part of this specification and in which like characters of reference designate the same or similar parts in all the views.

Figure l is a longitudinal section through an air brush embodying my improvements. V a

Figure 2- is a cross sectional view approximately on the line 2-2 in Fi and lookingtovvards the left hand.

Figure 3 is a detail sectional view of the air supply control; and

Figure 4 is a sectional detail of the rotor and its casing.-

Referring to thevieivs, the numeral il designates an elongated body cons ituting the main or handle portion which is provided with a bore or passage 11 communieating at its upper part with a flared extension which connects with a substantially cylindrical chamber 13 in which is mounted outstanding flange 16 into which is fitted a cylinder 11 that constitutes a housing for the brush rotating mechanism. This brush rotating mechanism comprises a rotor 18 having radially projecting blades 19 and said. rotor is journaled at 20 in the end 21 of the aforesaid cylinder 1". Mounted axially of the aforesaid rotor 18 is a pinion 22 in mesh with a gear 23 mounted on counter haft 24 in turn carrying a second pinion 25 in mesh with a gear 26 keyed or otherwise securely mounted on a spindle 27 journaled in the end 28 of the aforesaid cylinder 17. A brush body consisting of a substantially cylindrical element and bristles 30, is securely clamped on the More said spindle 2? means of a nut 31. Oil

ducts and an inlet valve 33 are pr vided in conjunction with the brush rotating mechanism and it is to be here particularly noted that the cylinder 17 housing the above referred to brus rotating mechanism is filled with a lubric nt so that the parts are maintained in perfect working order. Attached or otherwise appropriately secured to the outer end of the main or handle portiion 10 is valve element 34, the valve proper whereof is under the action of a cor iression spring 36 and said valve is operated by a pressure being exerted on the head 57 iv iich moves the passage 38 therein into register with the bore 11 and the air line connection 39. Now it Will be readily understood from inspection more particularly of Figure 3 that this valve construction provides for the easy manipulation of the air brush as well as serving to effectively prevent any wastage of power when the brush released or laid down, when not in use. asthe valve member 35 will automatically close or shut off communication be tween the air line 39 and the rotor 18.

Longitudinally of the aforesaid sleeve 14 there are pl'OYlClQCl aserics of tangentially in- 'clined slots or air inlets 40 which serve to spaced relation to the inlet passages 40. In other words it will be seen on an examination of Figure 4 and assuming that the rotor 18 is rotated in a clockwise direction,that is to say to the right hand-that the air under pressure admitted through any one port 40 is caused to have an operative effect on the blades 19 for a one-third revolution of the rotor.

From the foregoing description it will be readily seen that the motor constructed as above described is particularly simple in construction and I wish it clearly understood that I do not confine myself to the precise details described and shown as various chan 'es in the shape and disposition of the several parts may be effected without in any way departing from the essential features of my above described invention. For example, it willhe readily understood that a shield such as is indicated by the dot and dash :lines 42, may be fitted in conjunction with the brush so that the rust, dirt or other incrusta- "tions removed from a metallic surface over which the brush is operated, Wlll be prevented from flying about, As heretofore mentioned an air brush constructed as above descr bed 1s particularlyadapted for removing rust, dirt and the like from metallic surfaces and is especially serviceable in ship yards,

.for cleaning the sides of vessels and that aside from protecting the operator it can be readily positioned at various angles and coneveniently held to accomplish the desired result, whilst a great saving is effected in the power employed to wit, the air, in that the push valve automatically shuts off 'when pressure is removed from the head :posed within the confines of said shell, said head being formed in one'flat side with a plurality of outlet ports communicating with the interior of said shell, and a control device located in said passage near its juncture with said head whereby to control the passage of fluids through saidpassage In testimony whereof I affix my signature.

JOSEPH GASSER. 

